package edu.hcnu.expression;

import edu.hcnu.domain.LoginUser;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.stereotype.Component;

import java.util.List;

@Component("ex")
public class ExpressionRoot {

    public boolean hasAuthority(String authority) {
        //获取当前用户的权限
        Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
        if (authentication.getPrincipal() instanceof LoginUser) {
            LoginUser loginUser = (LoginUser) authentication.getPrincipal();
            List<String> permissions = loginUser.getPermissions();
            //判断用户权限集合中是否存在authority
            return permissions.contains(authority);
        }
        return false;
    }
}
